﻿MELOLONTHIDiE 
  OF 
  THE 
  UNITED 
  STATES. 
  283 
  

  

  spurs 
  ; 
  posterior 
  thighs 
  very 
  large, 
  posterior 
  tibiae 
  like 
  the 
  middle 
  ones, 
  but 
  much 
  

   thicker. 
  Tarsi 
  twice 
  as 
  long 
  as 
  the 
  tibise, 
  slender, 
  with 
  verticillate 
  hairs 
  at 
  the 
  articu- 
  

   lations 
  ; 
  last 
  joint 
  with 
  two 
  long 
  terminal 
  hairs 
  above 
  ; 
  ungues 
  long, 
  slender, 
  diverging 
  

   onychium 
  hardly 
  visible, 
  bisetose. 
  

  

  I 
  have 
  given 
  to 
  this 
  genus 
  an 
  unpublished 
  name 
  proposed 
  by 
  Dejean 
  for 
  Aclopus 
  

   Erichson, 
  to 
  which 
  genus 
  this 
  seems 
  to 
  bear 
  a 
  remarkable 
  resemblance 
  in 
  form. 
  The 
  

   labrum 
  and 
  mandibles 
  are 
  however 
  entirely 
  invisible. 
  I 
  regret 
  that 
  I 
  cannot 
  give 
  

   the 
  position 
  of 
  the 
  abdominal 
  stigmata, 
  but 
  conclude 
  that 
  they 
  must 
  be 
  very 
  much 
  as 
  

   in 
  the 
  next 
  genus. 
  

  

  1. 
  L. 
  ferrugineus, 
  valde 
  elongatus 
  ovalis, 
  nitidus 
  ferrugineus, 
  capite 
  punctato, 
  clypeo 
  parce 
  punctata, 
  

  

  thorace 
  minus 
  dense 
  inaequaliter 
  punctato, 
  ad 
  basin 
  ltevi, 
  antice 
  subcanaliculato, 
  lateribus 
  longe 
  fimbriatis, 
  

  

  elytris 
  parce 
  punctatis, 
  punctis 
  subseriatis 
  extrorsum 
  confusis, 
  breviter 
  parce 
  pilosis, 
  margine 
  fimbriatis 
  ; 
  

  

  subtus 
  et 
  pedibus 
  parce 
  longe 
  pilosis. 
  Long. 
  -19. 
  

  

  Ringgold 
  Barracks, 
  Texas. 
  We 
  owe 
  this 
  most 
  interesting 
  addition 
  to 
  our 
  fauna 
  to 
  

  

  the 
  scientific 
  industry 
  of 
  Mr. 
  H. 
  Haldeman. 
  The 
  genus 
  will 
  be 
  readily 
  recognized 
  

  

  by 
  the 
  narrow 
  oval 
  body, 
  fringed 
  with 
  long 
  hairs, 
  and 
  by 
  the 
  long 
  hairs 
  of 
  the 
  legs, 
  

  

  and 
  the 
  thickness 
  of 
  the 
  posterior 
  femora 
  and 
  tibiae. 
  

  

  Oncerus 
  Lee. 
  

  

  Clypeus 
  duplex 
  ; 
  mentum 
  trapezoideum 
  barbatum 
  ; 
  pedes 
  postici 
  incrassati 
  ; 
  ungues 
  fissi. 
  

  

  The 
  only 
  species 
  of 
  this 
  genus 
  known 
  to 
  me 
  is 
  the 
  smallest 
  of 
  the 
  tribe 
  that 
  I 
  have 
  

   seen, 
  and 
  presents 
  such 
  a 
  curious 
  assemblage 
  of 
  characters 
  that 
  I 
  am 
  at 
  a 
  loss 
  which 
  

   to 
  select. 
  The 
  form 
  might 
  be 
  compared 
  to 
  a 
  Hoplia, 
  oblong 
  and 
  more 
  narrowed 
  in 
  

   front 
  ; 
  the 
  body 
  is 
  shining, 
  sparsely 
  hairy, 
  especially 
  beneath. 
  The 
  head 
  is 
  narrow 
  

   with 
  convex 
  prominent 
  eyes, 
  the 
  clypeus 
  prolonged, 
  flattened, 
  parallel 
  on 
  the 
  sides, 
  

   rounded 
  slightly 
  at 
  the 
  apex 
  and 
  incised 
  each 
  side, 
  with 
  a 
  deep 
  transverse 
  concave 
  

   suture 
  between 
  the 
  incisions 
  ; 
  the 
  frontal 
  suture 
  is 
  straight 
  and 
  deep, 
  running 
  between 
  

   the 
  antennae 
  which 
  are 
  short 
  ; 
  the 
  first 
  and 
  second 
  joints 
  are 
  thick 
  and 
  hairy 
  ; 
  then 
  

   follow 
  four 
  small 
  joints, 
  and 
  then 
  a 
  small 
  three-jointed 
  club 
  concave 
  outwards; 
  the 
  

   mentum 
  is 
  large, 
  flat, 
  trapezoidal, 
  wider 
  in 
  front, 
  with 
  long 
  scattered 
  hairs 
  ; 
  the 
  bases 
  

   of 
  the 
  maxillae 
  are 
  long, 
  slender 
  and 
  prominent 
  each 
  side 
  of 
  the 
  mentum 
  ; 
  the 
  maxil- 
  

   lary 
  palpi 
  are 
  slender, 
  penultimate 
  joint 
  small, 
  last 
  joint 
  elongate, 
  slightly 
  oval 
  ; 
  labial 
  

   with 
  the 
  last 
  joint 
  longer 
  than 
  the 
  preceding, 
  slightly 
  oval. 
  Thorax 
  wider 
  than 
  the 
  

   head, 
  rounded 
  on 
  the 
  sides, 
  and 
  gradually 
  narrowed 
  in 
  front. 
  Elytra 
  a 
  little 
  wider 
  

   than 
  the 
  base 
  of 
  the 
  thorax, 
  oblong, 
  slightly 
  flattened 
  on 
  the 
  disc, 
  with 
  the 
  sutural 
  

   stria 
  fine. 
  Pygidium 
  slightly 
  exposed. 
  Legs 
  strong, 
  hairy, 
  anterior 
  tibia? 
  subbiden- 
  

   tate 
  ; 
  middle 
  tibiae 
  conical, 
  moderately 
  thick, 
  with 
  a 
  crown 
  of 
  short 
  spines 
  at 
  the 
  

   middle 
  externally, 
  and 
  two 
  apical 
  spurs. 
  Posterior 
  thighs 
  very 
  large, 
  tibiae 
  thick 
  

   conical, 
  with 
  a 
  crown 
  of 
  spines 
  externally 
  about 
  one-third 
  from 
  the 
  tip. 
  and 
  two 
  apical 
  

  

  